CN210951417U

CN210951417U - Electromagnetic oven with three-dimensional heating function

Info

Publication number: CN210951417U
Application number: CN201922078111.5U
Authority: CN
Inventors: 王海平; 王飞
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-07-07
Anticipated expiration: 2029-11-27

Abstract

The embodiment of the utility model provides an electromagnetism stove with three-dimensional heating function, include: the induction cooker comprises a magnetic cooker body (100) and a heat-preserving cover (200) connected above the magnetic cooker body (100); the heat preservation cover (200) includes metal inner shell (21) and is located heat preservation shell (22) in the metal inner shell (21) outside, metal inner shell (21) have the holding chamber of acceping the pot body, be provided with on the lateral wall of metal inner shell (21) and generate heat device (23), generate heat device (23) with magnetism stove body (100) electricity is connected, generate heat device (23) with be provided with annular sheetmetal (24) between heat preservation shell (22). The embodiment of the utility model provides an electromagnetism stove with three-dimensional heating function can solve the current electromagnetism stove and only heat the not good problem of culinary art effect that the pan bottom caused.

Description

Electromagnetic oven with three-dimensional heating function

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an electromagnetism stove with three-dimensional heating function.

Background

With the progress of science and technology and the improvement of living standard of people, the induction cooker is widely used and gradually becomes a necessary appliance for a kitchen. When the induction cooker works, high-frequency alternating current passes through the coil panel to enable the bottom of a pot placed on the induction cooker to generate eddy current, so that the pot arranged on the induction cooker is heated.

Among the prior art, the electromagnetism stove includes casing and upper cover, is provided with the coil panel in the casing, and the pan of treating the heating is placed on the panel of upper cover top, and the pan bottom realizes the heating under the vortex effect.

However, when only the bottom of the pot is heated, food in the pot is heated unevenly, which affects the cooking effect and does not easily keep the food in the pot warm.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an electromagnetism stove with three-dimensional heating function can solve the current electromagnetism stove and only heat the not good problem of culinary art effect that the pan bottom caused.

The embodiment of the utility model provides an electromagnetism stove with three-dimensional heating function, include: the magnetic furnace comprises a magnetic furnace body and a heat preservation cover connected above the magnetic furnace body;

the heat preservation cover comprises a metal inner shell and a heat preservation shell located on the outer side of the metal inner shell, the metal inner shell is provided with an accommodating cavity for accommodating the pot body, a heating device is arranged on the outer side wall of the metal inner shell, the heating device is electrically connected with the magnetic furnace body, and an annular metal sheet is arranged between the heating device and the heat preservation shell.

The embodiment of the utility model provides an electromagnetism stove with three-dimensional heating function, through setting up the electromagnetism stove body and the cover that keeps warm, make the bottom of pan be located the top of magnetism stove body, the pan body lateral wall of pan is located the holding intracavity of the cover that keeps warm, when the magnetism stove body is to the diapire heating of pan, the lateral wall heating of the device that generates heat in the cover that keeps warm to the pan, the realization is carried out three-dimensional heating to the pan, improve the homogeneity of being heated of food in the pan, so can further improve the culinary art taste of electromagnetism stove to food, especially cooking, cook congee, the culinary art taste of occasions such as a kind of deep pot hot water, improve the culinary art effect. Further, after the magnetism stove body stops the heating of pan, the lateral wall of pan dispels the heat under the heat preservation effect of heat preservation cover, thereby makes the food in the pan have longer heat preservation time, and the device that generates heat in the heat preservation cover can continuously generate heat, in order to play heating and heat preservation effect. And, be provided with annular sheetmetal between device and the lagging casing that generates heat, annular sheetmetal can play the thermal-insulated effect of reflection to further reduce the heat and scatter and disappear, improve the heat preservation effect, simultaneously, annular sheetmetal has lock magnetism radiation protection effect.

According to the induction cooker, the annular metal sheet is clamped outside the metal inner shell, and a heat insulation gap is formed between the annular metal sheet and the heat preservation outer shell.

The annular metal sheet can be directly clamped outside the metal inner shell, so that the installation and the disassembly are convenient, a heat insulation gap is formed between the annular metal sheet and the heat preservation shell, and the heat insulation gap can further play a role in heat insulation due to poor air heat conduction performance.

As for the induction cooker, the heating device comprises a resistance wire and aluminum foil paper wrapping the resistance wire, and the resistance wire is surrounded and attached to the outer side wall of the metal inner shell.

The resistance wire generates heat in order to play the heating effect behind the circular telegram, and the resistance wire sets up to the annular, sets up in succession along the lateral wall of metal inner shell to improve the homogeneity of being heated, aluminium foil paper parcel is in the resistance wire outside for the protection resistance wire, and has good heat conductivility.

The induction cooker comprises a cooker body and a panel, wherein the cooker body comprises a shell and the panel is connected above the shell, and the panel is located at the bottom of the accommodating cavity and used for bearing the cooker body.

When the induction cooker is used, the cooker is placed above the panel and is positioned in the accommodating cavity inside the heat-preservation cover, the magnetic cooker body heats the bottom wall of the cooker, and the heating device in the heat-preservation cover heats the side wall of the cooker, so that the all-dimensional heating of the cooker is realized, the heating uniformity of food in the cooker can be improved, and the cooking taste of the food is further improved.

The panel is directly adhered to the top of the shell or is connected with the shell through a fastener through a connecting piece, a heat insulation piece and the like. The panel can be fixed at the bottom of the accommodating cavity in a clamping or bonding mode or the panel is not fixedly connected with the accommodating cavity.

Furthermore, the heat preservation outer shell is fixed on the shell through a fastener, a flanging which is turned outwards is arranged on the upper edge of the metal inner shell, and the flanging is connected with the heat preservation outer shell through the fastener.

The flanging of the metal inner shell is provided with a mounting hole, so that the threaded fastener penetrates through the mounting hole to fixedly connect the metal inner shell to the heat-insulating outer shell. Therefore, the metal inner shell and the heat preservation outer shell are connected with each other, a gap with a certain width is formed between the metal inner shell and the heat preservation outer shell, the metal inner shell and the heat preservation outer shell are provided with heat insulation gaps, and a heat insulation effect is achieved.

According to the induction cooker with the three-dimensional heating function, the heating device is electrically connected with the induction cooker body through the conducting wire.

Adopt the wire to connect device and the magnetism stove body that generates heat, simple structure realizes easily, and the magnetism stove body of administrative or technical offices need not to set up the power alone for the device that generates heat for the device power supply that generates heat.

According to the induction cooker, the heat preservation cover is detachably connected with the shell.

After the heat preservation cover is detached from the shell, the magnetic oven body can be matched with a cooker to perform cooking work independently, and the heat preservation cover and the shell can be connected through a fastener or clamped through a buckle structure so as to be convenient to assemble and disassemble.

According to the induction cooker, the heat-insulating cover is provided with the first conductive terminal, the heating device is electrically connected with the first conductive terminal, the induction cooker body is provided with the second conductive terminal, and the first conductive terminal and the second conductive terminal are detachably and electrically connected.

The first conductive terminal and the second conductive terminal are mutually adaptive terminals, and the first conductive terminal and the second conductive terminal can realize the electrical connection between the heating device and the circuit board in the magnetic furnace body while being physically connected, so that the magnetic furnace body supplies power for the heating device. The first conductive terminal and the second conductive terminal are detachably connected, so that the stability of electric energy transmission between the magnetic stove body and the heating device can be improved, the working stability of the heat-insulating cover is improved, meanwhile, the number of power lines can be reduced, and convenience is brought to users.

The induction cooker with the three-dimensional heating function comprises a casing, a panel, a coil panel, a heating coil and a heating coil, wherein the panel is arranged in the casing, the coil panel is arranged below the panel, and the coil panel is fixed on the casing or the heat-insulating shell.

The coil disc can be fixed on the shell so that the magnetic furnace body is assembled as a whole; or the coil panel can be fixed on the heat-insulating shell so as to improve the reliability of the connection between the heat-insulating cover and the magnetic furnace body.

According to the induction cooker, the annular metal sheet is an aluminum sheet.

The aluminum sheet has light weight and low cost, and has better radiation-proof and anti-interference effects.

The structure of the present invention and other objects and advantages thereof will be more clearly understood from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of an induction cooker with a three-dimensional heating function according to an embodiment of the present invention;

fig. 2 is a schematic view of an overall structure of an induction cooker with a three-dimensional heating function according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an annular metal sheet according to an embodiment of the present invention.

Description of reference numerals:

100-a magnetic furnace body;

11-a housing;

12-a panel;

200-a heat preservation cover;

21-inner metal shell;

22-a heat preservation shell;

23-a heat generating device;

24-ring-shaped metal sheet.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

FIG. 1 is an exploded view of an induction cooker with a three-dimensional heating function according to an embodiment of the present invention,

fig. 2 is the overall structure schematic diagram of the induction cooker with three-dimensional heating function that the embodiment of the utility model provides, fig. 3 is the utility model discloses the structure schematic diagram of the annular sheetmetal that the embodiment provides, it is shown with reference to fig. 1-3, the embodiment of the utility model provides an induction cooker with three-dimensional heating function is provided.

The induction cooker comprises: a magnetic furnace body 100 and a heat preservation cover 200 connected above the magnetic furnace body 100; the heat-insulating cover 200 comprises a metal inner shell 21 and a heat-insulating outer shell 22 positioned outside the metal inner shell 21, the metal inner shell 21 is provided with an accommodating cavity for accommodating the pot body, the outer side wall of the metal inner shell 21 is provided with a heating device 23, the heating device 23 is electrically connected with the magnetic furnace body 100, and an annular metal sheet 24 is arranged between the heating device 23 and the heat-insulating outer shell 22.

Wherein, the magnetism stove body 100 is used for including the casing, sets up subassembly such as coil panel, circuit board, cooling fan in the casing, and magnetism stove body 100 is used for realizing the electromagnetic heating to the pan diapire. The heat-insulating cover 200 is connected above the magnetic oven body 100 and used for heating the side wall of the pot.

When the induction cooker is used, the cooker is placed above the induction cooker body 100 and is located in the accommodating cavity inside the heat-preservation cover 200, the induction cooker body 100 heats the bottom wall of the cooker, and the heating device 23 in the heat-preservation cover 200 heats the side wall of the cooker, so that the all-dimensional heating of the cooker is realized, the heating uniformity of food in the cooker can be improved, and the cooking taste of the food is further improved. Meanwhile, after the food is cooked, the side wall of the pot can be heated only by the heating device 23 in the heat-insulating cover 200, so that the heat insulation of the food is realized.

Specifically, the heat-insulating cover 200 includes the metal inner casing 21 and the heat-insulating outer casing 22, the heat-generating device 23 is disposed on the outer side wall of the metal inner casing 21, the heat-generating device 23 heats the metal inner casing 21, and the metal inner casing 21 has good heat conductivity, so that the cookware in the accommodating cavity of the metal inner casing 21 can be heated. Meanwhile, the heat-insulating outer shell 22 has good heat-insulating performance, so that the heat dissipation speed of the metal inner shell 21 can be reduced, and the heat-insulating cover 200 has good heat-insulating effect.

The containing cavity formed by the metal inner shell 21 is matched with the outer contour of the cookware, and the outer surface of the side wall of the cookware is in contact with the metal inner shell 21 or has a smaller gap, so that the thermal resistance between the cookware and the metal inner shell 21 is reduced, and the heat transfer efficiency is improved. The metal inner shell 21 and the heat-insulating outer shell 22 are similar in shape, so that the distance between the two is small, and heat loss is reduced as much as possible. The shapes of the metal inner shell 21 and the heat preservation outer shell 22 can be annular bodies, so that the adaptability of most of other cookware is improved, the applicability of the product is improved, and the metal inner shell 21 and the heat preservation outer shell 22 can be designed into elliptical annular bodies, square annular bodies, hexagonal bodies and the like according to specific use requirements.

Further, an annular metal sheet 24 is arranged between the heating device 23 and the heat preservation shell 22, and the annular metal sheet 24 can play a role in reflection and heat insulation, so that heat loss is further reduced, and the heat preservation effect is improved. Meanwhile, the annular metal sheet 24 has the magnetic locking and radiation protection functions.

In this embodiment, the annular metal sheet 24 is clamped outside the metal inner shell 21, and a heat insulation gap is formed between the annular metal sheet 24 and the heat preservation outer shell 22. Referring to fig. 3, the thickness of the annular metal sheet 24 is less than 1 mm, and it can be directly sleeved on the outer side of the inner metal shell 21, which is convenient for installation and disassembly. The annular metal sheet 24 is formed by abutting two ends of a strip-shaped metal sheet, the width of the annular metal sheet 24 is smaller than the height of the metal inner shell 21, and the inner diameter of the annular metal sheet 24 is larger than the outer diameter of the metal inner shell 21, so that the annular metal sheet 24 can be covered on the outer side of the metal outer shell 21 and cover the outer surface of the metal outer shell 21, and the effects of better reflection, heat insulation and magnetic locking are achieved.

The annular metal sheet 24 and the thermal insulation shell 22 have an insulation gap therebetween, which can further provide thermal insulation due to poor thermal conductivity of air. The width of the insulation gap should be no less than 1 mm for better insulation.

In one possible embodiment, the annular metal sheet 24 is an aluminum sheet. The aluminum sheet has light weight and low cost, and has better radiation-proof and anti-interference effects.

In the present embodiment, the heat generating device 23 can be realized in various ways, such as a resistance heating element or an infrared heating element. In this embodiment, the heating device 23 includes a resistance wire and an aluminum foil paper wrapping the resistance wire, and the resistance wire is surrounded and attached to the outer side wall of the metal inner casing 21. The heat generating unit 23 is disposed in a ring shape and continuously disposed along the outer sidewall of the inner metal shell 21 to improve the heating uniformity.

The resistance wire is wound on the outer side wall of the metal inner shell 21, the side face of the metal inner shell 21 is consistent with the side face of the cooker in shape and is of an arc-shaped structure, and therefore the resistance wire in the embodiment is also of the arc-shaped structure. The resistance wire generates heat after being electrified so as to play a role in heating, and the aluminum foil paper is wrapped outside the resistance wire and used for protecting the resistance wire and has good heat-conducting property.

On the basis of the above embodiments, in the present embodiment, the magnetic oven body 100 includes a housing 11 and a panel 12 connected above the housing 11, and the panel 12 is located at the bottom of the accommodating cavity and is used for carrying the pan body.

The panel 12 can be a glass panel or a ceramic panel, the panel 12 is disposed on the top of the housing 11, and the panel 12 is located at the bottom of the accommodating cavity for supporting the pot. The panel 12 is directly adhered to the top of the housing 11, or is connected to the housing 11 through a fastening member, a connector, a heat insulator, or the like. The panel 12 may be fixed at the bottom of the accommodating cavity by means of clamping or bonding, or the remaining accommodating cavities of the panel 12 have no fixed connection relationship.

When the induction cooker is used, a cooker is placed above the panel 12 and is positioned in the containing cavity inside the heat-preservation cover 200, the induction cooker body 100 heats the bottom wall of the cooker, and the heating device 23 in the heat-preservation cover 200 heats the side wall of the cooker, so that the all-dimensional heating of the cooker is realized, the heating uniformity of food in the cooker can be improved, and the cooking taste of the food is further improved.

In this embodiment, there are various fixing connection modes between the heat retaining cover 200 and the magnetic furnace body 100. First, the heat-retaining cover 200 and the housing 11 are detachably connected. After the heat-retaining cover 200 is detached from the housing 11, the induction cooker body 100 can be independently engaged with a pot to perform cooking work. The heat-insulating cover 200 and the housing 11 may be connected by a fastener or may be fastened by a snap structure to facilitate assembly and disassembly.

Specifically, the heat insulating outer shell 22 is fixed on the shell 11 through a fastener, the upper edge of the metal inner shell 21 is provided with a flange turned outwards, and the flange and the heat insulating outer shell 22 are connected through a fastener. The flanging of the metal inner shell 21 is provided with a mounting hole, so that the threaded fastener passes through the mounting hole to fixedly connect the metal inner shell 21 to the heat-insulating outer shell 22.

Furthermore, the tops of the metal inner shell 21 and the heat preservation outer shell 22 can be provided with decorative pieces, and the decorative pieces are fixed outside the edges of the metal inner shell 21 and the heat preservation outer shell 22 to play a role in fixing the metal inner shell 21 and the heat preservation outer shell 22, and meanwhile, the attractiveness of the joint of the metal inner shell 21 and the heat preservation outer shell can be improved.

The connection is such that a gap with a certain width is formed between the metal inner shell 21 and the heat preservation outer shell 22 for installing the heat generating device 23 and the annular metal sheet 24, and the metal inner shell 21 and the heat preservation outer shell 22 have a heat insulation gap for heat insulation.

In this embodiment, the heat generating device 23 in the heat-insulating cover 200 needs to be connected to a power supply. Alternatively, the heat-insulating cover 200 may be externally connected with a power cord to connect the heat-generating device 23 with an external power source. Alternatively, the heat-retaining cover 200 may be electrically connected to the induction cooker body 100, and the heating device 23 may supply power to the induction cooker body 100, thereby reducing the number of power lines of the induction cooker. The electrical connection between the heat generating device 23 and the magnetic furnace body 100 can be achieved in various ways.

In one possible embodiment, the heat generating device 23 is electrically connected to the induction cooker body 100 through a wire. The lead is connected to a circuit board inside the induction cooker body 100, and the circuit board inside the induction cooker body 100 is communicated with an external power supply through a power cord to supply power to the induction cooker body 100 and the heating device 23. At this time, the wire should have a protective sheath made of a heat-resistant material, and an avoiding structure for the wire to pass through is provided on the casing 11 of the induction cooker body 100.

In another possible embodiment, the heat-insulating cover 200 is provided with a first conductive terminal, the heat-generating device 23 is electrically connected to the first conductive terminal, the magnetic furnace body 100 is provided with a second conductive terminal, and the first conductive terminal and the second conductive terminal are detachably and electrically connected.

The first conductive terminal and the second conductive terminal are terminals adapted to each other, and the first conductive terminal and the second conductive terminal can be electrically connected to the circuit board in the magnetic furnace body 100 and the heating device 23 while being physically connected to each other, so that the magnetic furnace body 100 supplies power to the heating device 23. The connection can be dismantled to heat preservation cover 200 and magnetism stove body 100, and first conductive terminal and second conductive terminal can be dismantled and be connected, can improve magnetism stove body 100 and generate heat the stability of electric energy transmission between the device 23, improve the job stabilization nature of heat preservation cover 200, simultaneously, can retrench the quantity of power cord, convenience of customers uses.

On the basis of the above embodiments, the magnetic furnace body 100 further includes a coil panel, the coil panel is located in the casing 11 and below the panel 12, and the coil panel is fixed on the casing 11 or the heat insulating casing 22. The coil panel utilizes the high frequency alternating current who passes through to pass through the coil panel to make the pan bottom produce the vortex, thereby heat the pan. The coil disk may be fixed to the case 11 so that the magnet oven body 100 is assembled as a whole; alternatively, the coil disk may be fixed to the heat insulating case 22 so as to improve the reliability of the connection of the heat insulating cover 200 and the furnace body 100.

On the basis of the above embodiment, the induction cooker may further include a temperature sensing component and a temperature control device, wherein the temperature sensing component is used for detecting temperature information of the pot, the temperature control device is used for accessing to a circuit where the heating device 23 is located, and the temperature control device is used for receiving the temperature information from the temperature sensing component and controlling the heating operation of the heating device 23 according to the temperature information.

Specifically, set up temperature control device and generate heat the heating work of device 23 according to the temperature information control of pan, can generate heat the break-make of the circuit of device 23 place through the control to realize generating heat the opening and shutting of device 23 according to the temperature information control of pan, also can change the heating work of device 23 to the pan that generates heat through adjusting the heating power of device 23 that generates heat, can realize the mesh of the culinary art firepower of real-time control electromagnetism stove according to the culinary art state in the pan like this, and can avoid the problem that the pan lateral wall burns futilely.

The embodiment of the utility model provides an electromagnetism stove with three-dimensional heating function's theory of operation does, and electromagnetism stove body 100 heats the diapire of pan, and the device 23 that generates heat in the heat preservation cover 200 heats the lateral wall of pan, and both can go on simultaneously to the realization is to the three-dimensional heating of pan. In addition, the magnetic oven body 100 can heat the cookware independently, and the heating device 23 in the heat-insulating cover 200 can also heat the cookware independently. After the food in the pot is cooked, the magnetic oven body 100 stops heating, and the heating device 23 in the heat-insulating cover 200 continues heating to play a role in heat insulation.

In this embodiment, similar to the structure of the existing induction cooker, a circuit board, a fan, other heat dissipation devices, and the like are further disposed in the induction cooker body 100.

The circuit board is provided with a singlechip, an Insulated Gate Bipolar Transistor (IGBT), an IGBT drive circuit, a resonant circuit and the like. The specific structure of the coil panel, the circuit board, the fan and other heat dissipation devices can be seen in the corresponding structure in the existing electromagnetic oven, for example: the coil panel comprises a coil, a coil panel frame and a magnetic strip; the fan can be a centrifugal fan or an axial flow fan, and other single-person structures comprise a water tank, radiating fins and the like. The specific structure of each device in the induction cooker is not particularly limited in this embodiment.

It should be noted that, in this embodiment, fig. 1 to fig. 3 only show a part of structures in the electromagnetic oven, and for detailed structures of other devices in the electromagnetic oven, reference may be made to corresponding structures in the existing electromagnetic oven.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, which are used to indicate the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an electromagnetism stove with three-dimensional heating function which characterized in that includes: the induction cooker comprises a magnetic cooker body (100) and a heat-preserving cover (200) connected above the magnetic cooker body (100);

the heat preservation cover (200) includes metal inner shell (21) and is located heat preservation shell (22) in the metal inner shell (21) outside, metal inner shell (21) have the holding chamber of acceping the pot body, be provided with on the lateral wall of metal inner shell (21) and generate heat device (23), generate heat device (23) with magnetism stove body (100) electricity is connected, generate heat device (23) with be provided with annular sheetmetal (24) between heat preservation shell (22).

2. The induction cooker according to claim 1, characterized in that the annular metal sheet (24) is clamped outside the inner metal shell (21) and an insulating gap is provided between the annular metal sheet (24) and the outer insulating shell (22).

3. The induction cooker according to claim 1, characterized in that the heating means (23) comprises a resistance wire and an aluminum foil wrapping the resistance wire, and the resistance wire is wrapped around and attached to the outer side wall of the inner metal casing (21).

4. The induction cooker according to claim 1, characterized in that the induction cooker body (100) comprises a housing (11) and a panel (12) connected above the housing (11), the panel (12) being located at the bottom of the accommodating cavity for carrying the pan body.

5. The induction cooker according to claim 4, characterized in that the heat-insulating outer shell (22) is fixed on the housing (11) through a fastener, the upper edge of the inner metal shell (21) is provided with a flange turned outwards, and the flange and the heat-insulating outer shell (22) are connected through a fastener.

6. The induction cooker according to claim 5, wherein the heat generating means is electrically connected to the cooker body (100) by a wire.

7. The induction hob according to claim 4, characterized in, that the heat retaining cover (200) and the housing (11) are detachably connected.

8. The induction cooker according to claim 7, wherein a first conductive terminal is disposed on the heat-retaining cover (200), the heat generating device (23) is electrically connected to the first conductive terminal, a second conductive terminal is disposed on the induction cooker body (100), and the first conductive terminal and the second conductive terminal are detachably and electrically connected.

9. The induction cooking hob according to claim 4, characterized in, that the hob body (100) further comprises a coil disc, which is located inside the casing (11) and below the panel (12), the coil disc being fixed on the casing (11) or on the heat insulating shell (22).

10. The induction hob according to any one of the claims 1 to 9, characterized in, that the ring-shaped metal sheet (24) is an aluminium sheet.